:root {
    --primary: #2c5aa0;
    --primary-dark: #1a3d7a;
    --secondary: #3498db;
    --accent: #1abc9c;
    --danger: #e74c3c;
    --success: #2ecc71;
    --warning: #f1c40f;
    --light: #ffffff;
    --dark: #2c3e50;
    --gray: #7f8c8d;
    --light-gray: #ecf0f1;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-dark: linear-gradient(135deg, var(--primary-dark) 0%, #2980b9 100%);
    --border-radius: 12px;
    --box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    --box-shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: #f8fafc;
    background-image: radial-gradient(circle at 15% 50%, rgba(44, 90, 160, 0.05) 0%, transparent 55%),
                      radial-gradient(circle at 85% 30%, rgba(52, 152, 219, 0.05) 0%, transparent 55%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header Styles */
header {
    background: var(--gradient);
    color: white;
    padding: 3rem 0 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin-bottom: 2.5rem;
}

header::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
                      radial-gradient(circle at 80% 20%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.header-content { position: relative; z-index: 1; }

.logo {
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 1rem; gap: 15px;
}

.logo-icon {
    background: rgba(255, 255, 255, 0.2);
    width: 70px; height: 70px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.logo-icon i { font-size: 2.5rem; color: white; }

.logo h1 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700; font-size: 2.8rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    letter-spacing: -0.5px;
}

.tagline {
    font-size: 1.1rem; opacity: 0.95;
    max-width: 800px; margin: 0 auto 0.5rem;
    font-weight: 300;
}

.powered-by { font-size: 0.9rem; opacity: 0.8; margin-top: 0.5rem; font-weight: 600; }

/* Navigation for Tools */
.tool-nav {
    display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-top: 20px;
}
.tool-nav a {
    background: rgba(255,255,255,0.2); color: white;
    padding: 8px 15px; border-radius: 20px;
    text-decoration: none; font-size: 0.9rem;
    transition: var(--transition); border: 1px solid rgba(255,255,255,0.1);
}
.tool-nav a:hover, .tool-nav a.active { background: white; color: var(--primary); }

/* IP Display Section */
.ip-display-container {
    background: white; border-radius: var(--border-radius);
    padding: 1.5rem; margin: 2rem auto;
    max-width: 600px; box-shadow: var(--box-shadow);
    border: 1px solid rgba(44, 90, 160, 0.1);
}

.ip-display-label {
    font-size: 0.9rem; color: var(--gray);
    margin-bottom: 0.5rem; display: flex; align-items: center; gap: 8px;
}

.ip-display-value {
    font-size: 2rem; font-weight: 700; color: var(--primary);
    display: flex; align-items: center; justify-content: space-between;
    word-break: break-all;
}

.copy-btn {
    background: var(--light-gray); border: none;
    width: 40px; height: 40px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; color: var(--primary);
    transition: var(--transition); flex-shrink: 0; margin-left: 15px;
}

.copy-btn:hover { background: var(--primary); color: white; transform: scale(1.1); }

/* Main Content */
.main-content {
    display: grid; grid-template-columns: 1fr; gap: 2rem; margin-bottom: 3rem; flex: 1;
}
@media (min-width: 992px) { .main-content { grid-template-columns: 2fr 1fr; } }

.card {
    background: white; border-radius: var(--border-radius);
    box-shadow: var(--box-shadow); padding: 2rem;
    transition: var(--transition); border: 1px solid rgba(44, 90, 160, 0.05);
    margin-bottom: 2rem;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--box-shadow-hover); }

.card-title {
    font-family: 'Montserrat', sans-serif; font-size: 1.5rem; font-weight: 600;
    color: var(--primary); margin-bottom: 1.5rem; padding-bottom: 0.8rem;
    border-bottom: 2px solid var(--light-gray); display: flex; align-items: center; gap: 10px;
}
.card-title i { color: var(--secondary); }

/* Form Styles */
.form-group { margin-bottom: 1.5rem; }
label { display: block; margin-bottom: 0.5rem; font-weight: 500; color: var(--dark); }

.input-with-icon { position: relative; }
.input-with-icon i {
    position: absolute; left: 15px; top: 50%; transform: translateY(-50%); color: var(--gray);
}

input[type="text"] {
    width: 100%; padding: 14px 15px 14px 50px;
    border: 2px solid var(--light-gray); border-radius: var(--border-radius);
    font-size: 1rem; transition: var(--transition); font-family: 'Poppins', sans-serif;
}
input[type="text"]:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

.btn {
    background: var(--gradient); color: white; border: none;
    padding: 16px 32px; border-radius: var(--border-radius);
    font-size: 1rem; font-weight: 600; cursor: pointer;
    transition: var(--transition); display: inline-flex; align-items: center;
    justify-content: center; gap: 10px; width: 100%; font-family: 'Poppins', sans-serif;
}
.btn:hover {
    background: var(--gradient-dark); transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(44, 90, 160, 0.2);
}

/* Tabs & Results */
.result-section { margin-top: 2rem; }
.tabs {
    display: flex; border-bottom: 2px solid var(--light-gray);
    margin-bottom: 1.5rem; flex-wrap: wrap;
}
.tab-btn {
    padding: 12px 24px; background: none; border: none;
    font-weight: 600; color: var(--gray); cursor: pointer;
    transition: var(--transition); position: relative; font-family: 'Poppins', sans-serif;
}
.tab-btn.active { color: var(--primary); }
.tab-btn.active::after {
    content: ''; position: absolute; bottom: -2px; left: 0;
    width: 100%; height: 2px; background: var(--primary);
}

/* Info Grid */
.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1rem; }
.info-item {
    background: var(--light-gray); padding: 1.2rem;
    border-radius: 8px; border-left: 4px solid var(--primary); transition: var(--transition);
}
.info-item.danger { border-left-color: var(--danger); }
.info-item.success { border-left-color: var(--success); }
.info-item:hover { transform: translateX(5px); }
.info-label {
    font-size: 0.85rem; color: var(--gray); font-weight: 500;
    margin-bottom: 0.3rem; display: flex; align-items: center; gap: 5px;
}
.info-value { font-size: 1.1rem; font-weight: 600; color: var(--dark); word-break: break-all; }

/* Map & Tools */
.map-container {
    margin-top: 2rem; border-radius: var(--border-radius); overflow: hidden;
    height: 350px; background: var(--light-gray);
    display: flex; align-items: center; justify-content: center;
    border: 1px solid rgba(44, 90, 160, 0.1);
}
.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* FAQ Section */
.faq-block {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--light-gray);
}
.faq-block:last-child { border-bottom: none; }
.faq-q { color: var(--primary); margin-bottom: 0.5rem; font-size: 1.1rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.faq-a { color: var(--gray); font-size: 0.95rem; padding-left: 28px; }

/* Privacy Note */
.privacy-note {
    background: rgba(44, 90, 160, 0.05);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
}

/* Data Table */
.data-table-container {
    overflow-x: auto;
    max-height: 500px; /* Scrollable if very long */
    overflow-y: auto;
    border: 1px solid var(--light-gray);
    border-radius: 8px;
}
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(--light-gray); }
.data-table th { background: var(--light-gray); color: var(--primary); font-weight: 600; position: sticky; top: 0; z-index: 10; }
.data-table tr:hover { background-color: #f9f9f9; }

.status-badge { 
    padding: 4px 10px; border-radius: 50px; font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
}
.status-ok { background: rgba(46, 204, 113, 0.15); color: var(--success); }
.status-bad { background: rgba(231, 76, 60, 0.15); color: var(--danger); }
.detail-text { font-size: 0.85rem; color: var(--gray); }

/* Footer */
footer { background: var(--dark); color: white; padding: 4rem 0 2rem; margin-top: auto; }
.footer-content { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 768px) { .footer-content { grid-template-columns: 2fr 1fr 1fr; } }
.footer-section h3 { font-size: 1.2rem; margin-bottom: 1.5rem; color: white; font-family: 'Montserrat', sans-serif; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.8rem; }
.footer-links a {
    color: rgba(255, 255, 255, 0.7); text-decoration: none;
    transition: var(--transition); display: flex; align-items: center; gap: 8px;
}
.footer-links a:hover { color: white; transform: translateX(5px); }

/* Social Icons */
.social-icons { display: flex; gap: 10px; margin-top: 1rem; flex-wrap: wrap; }
.social-icon {
    width: 35px; height: 35px; border-radius: 50%; background: rgba(255, 255, 255, 0.1);
    display: flex; align-items: center; justify-content: center; color: white;
    text-decoration: none; transition: var(--transition);
}
.social-icon:hover { background: var(--primary); transform: translateY(-3px); }

.copyright {
    text-align: center; margin-top: 3rem; padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6); font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .logo h1 { font-size: 2rem; }
    .ip-display-value { font-size: 1.5rem; flex-direction: column; align-items: flex-start; gap: 10px; }
    .card { padding: 1.5rem; }
    .main-content { grid-template-columns: 1fr; }
}